A novel narrow band UV-B emitting phosphor-YPO4:Sb3+, Gd3+

作者：Deng Taoli; Yan Shirun^*; Hu Jianguo

来源：Journal of Rare Earths, 2016, 34(2): 137-142.

DOI：10.1016/S1002-0721(16)60005-4

• narrow band UV-B emission
• YPO4:Sb3+,Gd3+
• Sb3+ sensitization
• rare earths

YPO4 phosphors single-doped with Sb3+ or Gd3+ and co-doped with Sb3+ and Gd3+ were prepared by a solid-state reaction method. The phase purity, morphology, photoluminescence excitation and emission properties of the prepared phosphors were investigated. The results showed that Sb3+ could sensitize Gd3+ in the co-doped phosphors which made the phosphors excitable by short-wave ultraviolet (UV) at a wavelength between 220 and 260 nm. Under 253.7 nm excitation, the co-doped phosphors Y1-x-yPO4: Sb3+ (x), Gd3+ (y) showed strong emission of Gd3+ at a wavelength of 312 nm whose intensity changed with the doping concentrations of Gd3+ and Sb3+. The optimized Y0.77PO4:Sb3+ (0.07), Gd3+ (0.16) phosphor showed an intensity comparable to commercial LaPO4:Ce phosphor (UVB-315), making it a potential candidate for mercury low-pressure discharge narrow-band UV-B emitting lamps.

• 出版日期2016-2
• 单位复旦大学